Read Sony CDX-F50M Service Manual online
33
CDX-F50M
Pin No.
Pin Name
I/O
Pin Description
66
RAM BU
O
Not used in this set. (Fixed at “L”.)
67
TEST IN
I
Test mode detect signal input
68
FLASH W
I
Memory mode changeover signal input
Normally “H” input (single chip mode) “L” after reset: Flash write mode
69
NOSE SW
I
Front panel attachment detect signal input
“L” input: With panel, “H” input: Without panel
70, 71
NC
—
Not used in this set. (Open)
72
DOOR SW
I
Front panel open/close detect signal input
“L” input: Panel close, “H” input: Panel open
73
DOOR IND
O
Sub panel power supply control signal output
74
RC IN1
I
Rotary commander shift key signal input
75
XKEY ON
O
Key power supply control signal output Pin rj (KEY ACK) active: “L” output
76
NC
—
Not used in this set. (Open)
77
RESET
I
Reset signal input
78
NC
—
Not used in this set. (Open)
79
X1A
—
Oscillator connect pin (32.768 kHz)
80
X0A
—
Oscillator connect pin (32.768 kHz)
81
VSS
—
Ground pin
82
X0
—
Oscillator connect pin (18.432 MHz)
83
X1
—
Oscillator connect pin (18.432 MHz)
84
VCC+3.3
—
Power supply pin (+3.3 V)
85 to 88
NC
—
Not used in this set. (Open)
89
Z MUTE
I
Mechanism deck mute zero closs detect signal input
90
AUX SEL
I
AUX select signal input (Fixed at “L”.)
91
DEMO SEL
O
DEMO select signal output (Fixed at “H”.)
92, 93
NC
—
Not used in this set. (Open)
94
CD ON
I
Servo power supply control request signal input from CD mechanism
95
CDM ON
I
CD mechanism power supply control request signal input from CD mechanism
96
NC
—
Not used in this set. (Open)
97
EJECT OK
O
Front panel open information signal output to CD mechanism
98 to 100
NC
—
Not used in this set. (Open)
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